MHT CET Chemistry question
Not in JEE Main or NEET syllabus
A solid AB has rock salt structure. If the edge length is 520 pm and radius of anion is 80 pm, the radius of anion would be
Answer: (D)
Solution
In rock salt a = 2(r+ + r-), so r- = 520/2 - 80 = 180 pm; 440, 220 and 360 pm do not satisfy this. Hence the correct option is (d).